Currently we can buy shares (integer) in corpornations to represent how many shares (percentage) we have. That doesn't sound right. I am not a native English speaker, so I am not sure how best to put it, but maybe stock and share, respectively?
Anyway, now I noticed that although I technically have more stock in Russia, I have smaller share for some reason.
I never felt like I understood how it works, but this here moment clearly made me notice that something seems wrong.
P.S. I am not saying you have to make stock market work realistically, because that may be both too hard and make nation buyout impossible.